Beyond P11D: Employee Vouchers, Allowances and Reimbursements That Require Payroll Treatment
It’s P11D silly season again. Employers are tidying up benefits, handing out gifts and allowances, and assuming everything will sort itself out on form P11D. In reality, many common payments and gifts should go through payroll for tax and/or Class 1 NIC, and some are both a P11D benefit and a payroll NIC item. Here are the key traps.
- Author
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Tracey Hand
TL:DR - Quick checklist for P11D season
Before you process any payment, ask:
Is this a round-sum allowance with no requirement to account for actual spend? → Likely earnings, payroll tax + Class 1 NIC.
Is this a voucher?
Can it be exchanged for cash? → Earnings, fully payrolled for tax and Class 1 NIC.
Only for goods/services? → P11D + Class 1 NIC via payroll.
Are we reimbursing a personal mobile tariff or private use? → Tax + Class 1 NIC through payroll.
Are we paying for business calls over the tariff only? → Tax-free but P11D reportable.
Is this a “small gift” under £50?
Cash or cash-like? → Not trivial, must be payrolled.
Non-cash, not a reward, under £50? → Could be trivial benefit.
When in doubt, treat it as earnings first and check whether an exemption applies, rather than assuming it’s a clean P11D-only benefit.
The meaty stuff
1. Non-cash and gift vouchers – the double whammy
What happens: A gift voucher is given as a “thank you” or incentive and treated as a simple P11D benefit.*
What HMRC says:
Non-cash vouchers (goods/services only)
Report on P11D (non-Class 1A).
Collect Class 1 NIC through payroll on the value.
Cash vouchers (can be exchanged for cash)
Treated as earnings.
Must go through payroll for income tax and Class 1 NIC.
Not a traditional P11D benefit in kind.
Non-cash vouchers = P11D + Class 1 NIC via payroll.
Cash vouchers = earnings, fully payrolled.
That’s the double whammy.
Trying to keep vouchers off payroll because they’re “not pay” is a classic gotcha.
*If the value is £50 or less (including VAT), is genuinely a gift (not a reward for work or performance), is not cash or a cash voucher, and is not contracted, it may qualify as a trivial benefit and be non-reportable.
2. Telephone “allowance” payments – the allowance trap
What happens: A flat monthly telephone or mobile allowance is paid to cover phone costs, assumed to be an expense.
What HMRC says:
A round-sum allowance paid without reference to actual business spend is generally earnings:
Income tax via PAYE through payroll.
Class 1 NIC through payroll.
Usually not a P11D benefit at all.
If you reimburse actual business calls over a tariff, that can be tax-free but must be reported on P11D. If you reimburse the monthly tariff or private use, that’s tax + Class 1 NIC through payroll.
“Allowance” is not a magic word that makes something non-taxable.
3. Personal mobile phone reimbursements – the contract problem
What happens: Staff use their own phones for work and the company reimburses their monthly bill, assumed to be a business expense.
What HMRC says:
If the contract is in the employee’s name and the employer reimburses:
Monthly tariff or private use
Taxable as earnings → PAYE via payroll.
Class 1 NIC via payroll.
No P11D needed.
Business calls over the tariff limit
Tax-free, but must be reported on P11D.
No Class 1 NIC.
Employer pays the supplier directly (employee still holds the contract)
Must be reported on P11D.
Class 1 NIC via payroll.
The only clean, tax- and NIC-free option is when the employer contracts and provides one mobile phone per employee (with limited private use). That’s a specific exemption, not a reimbursement.
4. Round-sum expense allowances – the “it’s just an expense” myth
What happens: A flat allowance for travel, meals, or mobile is paid, assumed to be exempt.
What HMRC says:
HMRC distinguishes between:
Genuine reimbursements of actual business costs (often tax-free if properly evidenced), and
Round-sum allowances paid regardless of actual spend.
Round-sum allowances are usually:
Taxable as earnings → PAYE via payroll.
Class 1 NIC via payroll.
Not a P11D benefit in kind.
If the employee can keep any “savings” or gets the money even when they haven’t spent it, HMRC sees that as earnings.
The takeaway
The pattern is consistent:
“Allowance” does not mean “non-taxable.”
“Voucher” does not mean “just a P11D.”
“Reimbursement” does not mean “no NIC.”
If it’s a flat amount, can be turned into cash, or reimburses private costs where the contract is in the employee’s name, the default is often: PAYE + Class 1 NIC through payroll, and sometimes also a P11D entry.
If you’re unsure whether something should be payrolled or reported on P11D, treat it as earnings first and check whether an exemption applies, rather than assuming it’s a clean P11D-only benefit.